Malaysian officials have discovered 139 graves of human trafficking victims in the abandoned camps of people-smuggling gangs along the Malaysia-Thailand border. Christian Today reports hundreds of human trafficking victims could be buried there, as some of the graves contained multiple bodies.

Some of the bodies showed evidence of torture; the 28 camps were discovered included barbed wired cages that could apparently hold hundreds of people, according to Relevant.

Joel Millman, of the International Organization for Migration, said that more graves are will likely be discovered in the coming days.

The Malaysian government is now investigating to determine if forestry officials in the area were involved with the human-smuggling trade.